'use strict'

var is = require('bpmn-js/lib/util/ModelUtil').is,
  getBusinessObject = require('bpmn-js/lib/util/ModelUtil').getBusinessObject

var ImplementationTypeHelper = require('../../../helper/ImplementationTypeHelper')

var externalTaskPriority = require('./implementation/ExternalTaskPriority')

function getServiceTaskLikeBusinessObject(element) {
  var bo = ImplementationTypeHelper.getServiceTaskLikeBusinessObject(element)

  // if the element is not a serviceTaskLike element, fetch the normal business object
  // This avoids the loss of the process / participant business object
  if (!bo) {
    bo = getBusinessObject(element)
  }

  return bo
}

module.exports = function(group, element, bpmnFactory, translate) {

  var bo = getServiceTaskLikeBusinessObject(element)

  if (!bo) {
    return
  }

  if (is(bo, 'activiti:TaskPriorized') || (is(bo, 'bpmn:Participant')) && bo.get('processRef')) {
    group.entries = group.entries.concat(externalTaskPriority(element, bpmnFactory, {
      getBusinessObject: function(element) {
        if (!is(bo, 'bpmn:Participant')) {
          return bo
        }
        return bo.get('processRef')
      }
    }, translate))
  }
}
